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NQR study of high-Tc superconductor TlSr2CaCu2O7−δ

✍ Scribed by G.-q. Zheng; Y. Kitaoka; K. Asayama; T. Kondo; Y. Shimakawa; T. Manako; Y. Kubo

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
136 KB
Volume
185-189
Category
Article
ISSN
0921-4534

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✦ Synopsis

63Cu NQR measurement has been carried out in superconducting and nonsuperconducting {metallic) TISr2CaCu207-~ . In the superconducting material, 1/T1 follows the TiT=const. relation only in a narrow temperature range above Tc, suggesting the existence of the AF spin fluctuation. The reduction of I/TIT observed in the nonsuperconducting sample suggests that the suppression of the spin fluctuation by the overdoped hole destroys the superconductivity.

📜 SIMILAR VOLUMES

Pressure effects on Tc and structure in
Pressure effects on Tc and structure in overdoped TlSr2CaCu2O7−δ
✍ Y. Shimakawa; J.D. Jorgensen; B.A. Hunter; H. Shaked; R.L. Hitterman; Y. Kubo; T 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 607 KB

The effects of pressure on T c and structure in overdoped T1Sr2CaCu20 7\_ 6 have been investigated. For superconducting samples dTc/d p is small and negative with din Told p varying from -0.016 GPa -l to -0.006 GPa -l. There is no significant difference in the lattice compressibilities for supercond